CN101058383A - Elevator and elevator sheave - Google Patents
Elevator and elevator sheave Download PDFInfo
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- CN101058383A CN101058383A CNA2007100961973A CN200710096197A CN101058383A CN 101058383 A CN101058383 A CN 101058383A CN A2007100961973 A CNA2007100961973 A CN A2007100961973A CN 200710096197 A CN200710096197 A CN 200710096197A CN 101058383 A CN101058383 A CN 101058383A
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- rope sheave
- elevator
- hoist cable
- resin
- sheave
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B15/00—Main component parts of mining-hoist winding devices
- B66B15/02—Rope or cable carriers
- B66B15/04—Friction sheaves; "Koepe" pulleys
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- Cage And Drive Apparatuses For Elevators (AREA)
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
Abstract
The present invention relates to an elevator where friction coefficient between a rope and a sheave is kept stable. The elevator includes a car (1), a rope (2) connected to the car (1), and a sheave (4), having the rope (2) therearound and rotating to travel the car (1). The rope (2) is a resin-covered wire rope formed by twisting steel wires and by coating the twisted wires with resin. The sheave (4) is provided with at least one groove having a surface of which arithmetic mean deviation of the profile Ra ranges from 4[mu]m to 10[mu]m in longitudinal and width directions of the groove. Further, a ratio of Zva to Zpa falls within a range from 1.5 to 2.0, where Zva indicates an average of depths of lower parts on the surface of the groove, and Zpa indicates an average of heights of higher parts thereon.
Description
Technical field
The present invention relates to a kind of hoist cable is connected with lift car and is wound on the rope sheave, drive elevator and the elevator sheave that rope sheave drives lift car by rotation, and the present invention is particularly suitable for reducing the elevator and the elevator sheave of abrasion by stablizing the friction coefficient between hoist cable and the rope sheave.
Background technology
In using the hoist cable formula elevator of wire sling, hoist cable is wound on the rope sheave that is installed on the winch, and is the center with the rope sheave, the side suspention lift car of hoist cable, and the opposite side suspention is used for keeping with lift car the counterbalanced weight of balance.And, make the rope sheave rotation by winch, by the friction force between hoist cable and the rope sheave, the lift car by the hoist cable suspention is moved.Therefore, reasonably moving under the state, be necessary to make the friction coefficient between hoist cable and the rope sheave to reach the degree that enough elevator is driven, and be necessary to make this friction coefficient to keep stable in order to make elevator.
In general, elevator uses wire sling usually, and these wire slings are generally formed by the steel wire twisted, and its core uses and contains the hemp core that is soaked with grease., in light weight in order to obtain stable action, the hoist cable of corrosion resistance and good and superior durability also uses by the steel wire twisted to form, and is coated with the hoist cable of resin and syntheticfibres hoist cable etc.These resin-coating hoist cables are compared with wire sling with the syntheticfibres hoist cable and since resin than metal more soft and easy deformation more, so the contact surface pressure ratio wire sling between hoist cable and the rope sheave is little.Therefore, hoist trunk in-to-in dust, water droplet and wet goods foreign matter are invaded between hoist cable and the rope sheave easily, and when a large amount of foreign matters adhere to, may cause the friction force between hoist cable and the rope sheave to descend, thereby cause elevator reasonably moving under the state.
In addition, for example shown in the special table of the Japan's patent of invention 2003-512269 communique of patent documentation 1, disclosed for transmitting tractive power (being propulsive effort), the roughness of surface of the circumferencial direction of traction sheave (rope sheave) contact surface is set between 1～3 μ m, and coats the technology of hard corrosion stability clad in order to improve durability at the contact surface of rope sheave.
And, for example the patent of invention spy of Japan as patent documentation 2 opens shown in the 2001-139267 communique, disclosed in order to drive the syntheticfibres hoist cable, the roughness grade number that hoist cable groove (rope sheave) is surperficial is set in the technology between N7～N12 grade (being equivalent to arithmetic average roughness Ra=1.6～50 μ m).
Patent documentation 1: special table 2003-512269 communique
Patent documentation 2: the spy opens the 2001-139267 communique
In above-mentioned technology formerly, under situation about just merely the roughness of surface of rope sheave groove being set at about a few μ m, if adopt resin-coating hoist cable and syntheticfibres hoist cable, a large amount of foreign matters then can occur and stick to the surface, and cause the jog on surface to be capped, thereby the situation that causes friction coefficient to descend significantly.For example, if when having a large amount of oil to stick to the surface, can cause the jog on surface to be covered, thereby cause friction coefficient to descend by oil.In addition, under the roughness of surface with the rope sheave groove is set at situation about tens μ m, descend because of the adhesion of foreign matter though help preventing friction coefficient, along with the increase of roughness of surface, compare with metal, the abrasion of the hoist cable of being made by the flexibility resin increase.
Summary of the invention
The objective of the invention is to realize,, can prevent that also friction coefficient from descending, guarantee stable tractive force, prevent that simultaneously hoist cable is worn away even use resin-coating hoist cable and the syntheticfibres hoist cable that is subjected to the foreign matter influence easily.
In order to address the above problem, the invention provides a kind of elevator, it is a kind of hoist cable formula elevator, in this elevator, hoist cable is connected with lift car and is wound on the rope sheave, drives rope sheave by rotation and drives lift car, wherein, this elevator has: the resin-coating hoist cable, and this hoist cable is formed by the steel wire twisted, and is coated with resin; And described rope sheave, the circumferencial direction of the flute surfaces of this rope sheave and the roughness of surface of Width are arithmetic average roughness Ra=4～10 μ m, the peak average height of supposing described roughness of surface curve is Zpa, when the aviation value of the low ebb degree of depth of described roughness of surface curve is Zva, satisfy the relation of Zva/Zpa=1.5～2.0.
In addition, the present invention also provides a kind of elevator, it is a kind of hoist cable formula elevator, in this elevator, the resin-coating hoist cable is connected with lift car and is wound on the rope sheave, drives this rope sheave by rotation and drives lift car, wherein, the groove of described rope sheave is by behind the normal direction of rope sheave flute surfaces projection irregular polygon or ball-shaped powder, processes from tangential direction projection irregular polygon or ball-shaped powder to form again.
According to the present invention, even be stained with foreign matters such as oil and water droplet, the slippage of friction coefficient is also very little, can improve reliability of operation for a long time.And light by working weight, the resene hoist cable of corrosion resistance and good and superior durability can suppress the abrasion of hoist cable, so can prolong the life-span of hoist cable, reduces hoist cable and changes number of times, makes maintenance become more convenient, can reduce maintenance cost.
Description of drawings
Fig. 1 is the lateral plan of the lift appliance general configuration in expression an embodiment of the present invention;
Fig. 2 is the lateral plan and the section-drawing of the rope sheave in the embodiment;
Fig. 3 is the section-drawing of the rope sheave flute surfaces in the embodiment;
Fig. 4 is the diagram of curves that concerns between the ratio of the arithmetic average roughness Ra and the coefficientoffriction a of the rope sheave flute surfaces of expression in one embodiment and the coefficientoffriction b when being stained with oil;
Fig. 5 is the diagram of curves that concerns between the relative abrasion loss W with hoist cable of arithmetic average roughness Ra of the rope sheave flute surfaces in expression one embodiment;
Fig. 6 is the section-drawing of the rope sheave flute surfaces in the embodiment;
Fig. 7 is the diagram of curves that concerns between the ratio of the ratio Zva/Zpa and the coefficientoffriction a of aviation value Zva of the peak average height Zpa of the rope sheave flute surfaces of expression in one embodiment and the low ebb degree of depth and the coefficientoffriction b when being stained with oil;
Fig. 8 is the diagram of curves that concerns between the relative abrasion loss W with hoist cable of ratio Zva/Zpa of aviation value Zva of the peak average height Zpa of the rope sheave flute surfaces of expression in one embodiment and the low ebb degree of depth;
Fig. 9 is the lateral plan of the projecting direction when rope sheave projection powder in expression one embodiment;
Figure 10 is that expression adopts FFT that the rope sheave flute surfaces among each embodiment is analyzed and the figure that concerns between the wavelength that obtains and the amplitude;
The figure of the relative abrasion loss W of hoist cable when Figure 11 is the abrasion test of each embodiment of expression;
Figure 12 is that expression adopts FFT that the rope sheave flute surfaces among each embodiment is analyzed and the figure that concerns between the wavelength that obtains and the amplitude;
Figure 13 is that expression adopts FFT that the rope sheave flute surfaces among each embodiment is analyzed and the figure that concerns between the wavelength that obtains and the amplitude;
Figure 14 is that expression adopts FFT that the rope sheave flute surfaces among each embodiment is analyzed and the figure that concerns between the wavelength that obtains and the amplitude;
Figure 15 is the figure of the ratio of the coefficientoffriction a of each embodiment of expression and the coefficientoffriction b when being stained with oil;
Figure 16 be expression one embodiment carrying out the section-drawing of the rope sheave flute surfaces handled of metal coating;
Figure 17 is the enlarged drawing of Figure 16.
Nomenclature
1 lift car
2 hoist cables
3 winchs
4 rope sheaves
5 deflection sheavies
6 counterbalanceds weight
7 guide rails
8 guide boots
9 grooves
10 powders
11 metal coatings
12 contain the metal coating of low friction resin
The specific embodiment
Fig. 1 is the scheme drawing of expression as the elevator of an embodiment.In Fig. 1,1 expression is used to carry passenger's lift car, and lift car 1 is connected with hoist cable 2, and hoist cable 2 is wound on the rope sheave 4 that is installed on the winch 3.And hoist cable 2 is connected with counterbalanced weight 6 via deflection sheave 5.Be provided with guide rail 7 in hoist trunk, the guide boot 8 that is installed on the lift car 1 is clipped in the middle guide rail 7.
When rope sheave 4 after rotation under the driving of winch 3, rely on the friction force between hoist cable 2 and the rope sheave 4, the rotational force of rope sheave 4 is passed to hoist cable 2 and hoist cable 2 is moved, thereby lift car 1 is moved up and down in hoist trunk along guide rail 7.The lift car when dotted portion of Fig. 1 is represented floor of lift car 1 rising and the position of counterbalanced weight.
Fig. 2 (a) is the lateral plan of above-mentioned rope sheave 4, and Fig. 2 (b) is the section-drawing at the A-A section place of above-mentioned rope sheave 4.Be provided with the groove 9 of three hoist cables that are used to reel on this rope sheave.
Fig. 3 is the section-drawing of rope sheave groove 9, and the surface of rope sheave groove for example adopts method such as shot-peening processing to process and form the roughness of arithmetic average roughness Ra=4～10 μ m to flute surfaces projection abrasive particle.
Fig. 4 is the result of a measurement with the corresponding friction coefficient of arithmetic average roughness Ra of rope sheave groove.And the experimental result of the following stated is to use by the steel wire twisted and forms, and is coated with the result of experiment that the resin-coating hoist cable of resin carries out.μ a represents that hoist cable and rope sheave are in the friction coefficient under the clean state, the friction coefficient when μ b represents to be stained with oil on hoist cable and the rope sheave.The longitudinal axis of Fig. 4 is represented the friction coefficient ratio, i.e. the ratio of μ a and μ b.When friction coefficient when big, clean state and the difference that is stained with the friction coefficient between the state of oil increase, so that the friction force between hoist cable and the rope sheave becomes is unstable.When arithmetic average roughness Ra when 4 μ m are above, the friction coefficient ratio is reduced near 1.2.Because the friction coefficient difference diminishes, so can obtain stable friction force.
Fig. 5 is the result of a measurement with the corresponding hoist cable abrasion loss of arithmetic average roughness Ra of rope sheave groove.And in the drawings, the abrasion loss during with arithmetic average roughness Ra=1 μ m is set at 1, and the result of a measurement of other abrasion losss is relative values of the abrasion loss during with respect to arithmetic average roughness Ra=1 μ m.The resin-coating hoist cable that makes the metallic rope pulley and the outside be coated with resin slides and carries out abrasion test, and the result of this abrasion test shows that the resin that is coated on the hoist cable is worn away.Abrasion between metal and the resin can be divided into the resin-coated and abrasive particle abrasion that produce of gummed abrasion that resinoid bond produces on friction object metal time the and the cutting of friction object metallo-thrust.When the arithmetic average roughness Ra of rope sheave groove when 10 μ m are following, the gummed abrasion are main abrasion, its abrasion loss increases gradually along with the increase of arithmetic average roughness Ra.On the other hand, when the arithmetic average roughness Ra of rope sheave groove had surpassed 10 μ m, the abrasive particle abrasion became main abrasion, and abrasion loss sharply increases.Therefore, for resin-coated abrasion loss is remained on lower value, desirable method is that the arithmetic average roughness Ra with the rope sheave groove is controlled at below the 10 μ m.
Can know from the result of a measurement of the result of a measurement of friction coefficient shown in Figure 4 and amount of friction shown in Figure 5, be controlled between Ra=4～10 μ m by arithmetic average roughness the rope sheave flute surfaces, can access stable friction coefficient, elevator is reasonably being moved under the state.And, can suppress the abrasion of hoist cable, thereby can improve the life-span of hoist cable.
In addition, Fig. 4 and result of a measurement shown in Figure 5 are that pass between the aviation value Zva of the aviation value Zpa of the high peak heights Zp of roughness curve described later and low ebb degree of depth Zv measures when tying up in the scope of Zva/Zpa=1.5～2.0.
Fig. 6 is the section-drawing of rope sheave groove, and the average line the when long and short dash line among the figure is represented section shape as roughness curve is called the peak with the projection of average line top, and the projection of average line below is called low ebb.In the section-drawing of Fig. 6 (a), the aviation value Zva of the aviation value Zpa of the high peak heights Zp of roughness curve and low ebb degree of depth Zv is basic identical.And in the section-drawing of Fig. 6 (b), the front end protrusion on peak is cut, and is in the state of Zpa less than Zva.
The aviation value Zva of the aviation value Zpa of high peak heights Zp and low ebb degree of depth Zv is by obtaining the height (Zp on the peak in the roughness curve that is included in the rope sheave flute surfaces
1～Zpn) and the degree of depth (Zv of low ebb
1～Zvm) aggregate value, and with this aggregate value divided by peak quantity n and low ebb quantity m and obtain.
Fig. 6 (a) expression is the abrasive particle of the irregular polygon of 450 μ m by the normal direction projection diameter from the rope sheave flute surfaces, the arithmetic average roughness of rope sheave flute surfaces is processed into Ra=6.0 μ m and the flute surfaces that obtains.Fig. 6 (b) expression is the abrasive particle of the irregular polygon of 1500 μ m by the normal direction projection diameter from the rope sheave flute surfaces, be the abrasive particle of the irregular polygon of 110 μ m from the tangential direction of rope sheave flute surfaces projection diameter afterwards, the arithmetic average roughness of rope sheave flute surfaces be processed into Ra=6.0 μ m and the flute surfaces that obtains.Compare with Fig. 6 (a), by throwing abrasive particle from tangential direction, the projection of peak front end has been cut.And the diameter of employed abrasive particle is preferably 100～1700 μ m, and, preferably adopt the abrasive particle of 400～1700 μ m from the processing that normal direction is carried out, and preferably adopt the abrasive particle of 100～600 μ m from the processing that tangential direction is carried out.In addition, the diameter of the abrasive particle that is adopted from the processing that tangential direction is carried out is preferably the diameter less than the abrasive particle that is adopted the processing of carrying out from normal direction.
Fig. 7 represents the ratio of aviation value Zva of the aviation value Zpa of high peak heights Zp of rope sheave flute surfaces and low ebb degree of depth Zv and the result of a measurement of friction coefficient.μ a represents that hoist cable and rope sheave are in the friction coefficient under the clean state, the friction coefficient when μ b represents to be stained with oil on hoist cable and the rope sheave, and result of a measurement is wherein represented with the ratio of μ b with μ a.When Zva/Zpa is 2.0 when following, the ratio of the coefficientoffriction b of the coefficientoffriction a under the clean state when being stained with oil is reduced near 1.2, and two friction coefficient are basic identical.This is to form the oil low-lying area because oil accumulates on the surface of rope sheave groove easily, so even under the state that is stained with oil, friction coefficient also is difficult for descending.And when Zva/Zpa 2.0 when above, oil is not easy to accumulate that to form oil hollow on the surface of rope sheave groove, and remains on the contact surface of hoist cable and rope sheave.Therefore, when the state of oil adhesion occurring, friction coefficient can descend.That is, μ a/ μ b increases.
Fig. 8 represents the ratio of aviation value Zva of the aviation value Zpa of high peak heights Zp of rope sheave flute surfaces and low ebb degree of depth Zv and the result of a measurement of resin-coated abrasion loss.And in the drawings, the abrasion loss during with arithmetic average roughness Zva/Zpa=3.0 is set at 1, and the result of a measurement of other abrasion losss is relative values of the abrasion loss during with respect to arithmetic average roughness Zva/Zpa=3.0.
When Zva/Zpa 1.5 when following because the cause of the projection of rope sheave flute surfaces, the abrasion loss of hoist cable increases.By Zva/Zpa is controlled at more than 1.5, owing to the projection minimizing of rope sheave flute surfaces, so can reduce the abrasion of hoist cable.
Therefore, be controlled between 1.5～2.0, can obtain stable friction coefficient, elevator is reasonably being moved in the state by ratio Zva/Zpa with the aviation value Zva of the aviation value Zpa of the high peak heights Zp of rope sheave flute surfaces and low ebb degree of depth Zv.And, can suppress the abrasion of hoist cable and prolong life-span of hoist cable.In addition, Fig. 7 and result of a measurement shown in Figure 8 are that arithmetic average roughness in the rope sheave flute surfaces measures in the scope of Ra=4～10 μ m the time.
As the method that Zva/Zpa is controlled between 1.5～2.0, shown in Fig. 9 (a), can be behind the normal direction projection irregular polygon or ball-shaped powder 10 of the groove 9 of rope sheave 4, shown in Fig. 9 (b), from the tangential direction projection irregular polygon or the ball-shaped powder 10 of the groove 9 of rope sheave 4, the top projection on surface is got rid of and realized again.
Figure 10 represents section shape shown in Figure 6 is carried out Fast Fourier Transform (FFT) (FFT) and the wavelength that obtains and the relation between the amplitude.As the window function of FFT, use Hamming window (characteristics of Hamming window are effectively to remove secondary lobe, can carry out the broad measurement of dynamic range).And, regard the result who obtains in the Fast Fourier Transform (FFT) as sound wave, obtain separately amplitude respectively with the central frequency of 1/3rd octaves.In addition, obtain the inverse of frequency and it is transformed into wavelength.
In Figure 10, with the 3-1 as a comparative example of the waveform shown in Fig. 6 (a), with the waveform shown in Fig. 6 (b) as embodiment 3-1.And, it is that the abrasive particle of irregular polygon of 400～500 μ m is from the projection of the normal direction of rope sheave flute surfaces that the embodiment 3-2 of Figure 10 represents diameter, and then, be processed into Ra=4.0 μ m and the shape of the rope sheave groove that obtains with this arithmetic average roughness with the rope sheave flute surfaces from the projection of the tangential direction of rope sheave flute surfaces.Concrete job operation and the arithmetic average roughness Ra of table 1 expression embodiment 3-1,3-2 and comparative example 3-1.
Table 1
| Job operation | Arithmetic average roughness Ra (μ m) | |
| Embodiment 3-1 | Abrasive particle * throws (normal direction+tangential direction) | 6.0 |
| Embodiment 3-2 | Abrasive particle * throws (normal direction+tangential direction) | 4.0 |
| Comparative example 3-1 | Abrasive particle * throws (normal direction) | 6.0 |
* abrasive particle uses the irregular polygon abrasive particle of diameter 400～500 μ m.
Figure 11 is the abrasion test result of rope sheave groove and the hoist cable of comparative example shown in Figure 10 and embodiment.The longitudinal axis of Figure 11 represents that the resin-coated abrasion loss that obtains in the test with embodiment 3-1 is 1 o'clock a relative abrasion loss.That is, compare with embodiment 3-1 and embodiment 3-2, the abrasion loss of comparative example 3-1 is bigger, even the Ra of rope sheave groove is identical, if but the amplitude difference of wavelength component separately, then resin-coated abrasion loss also difference can occur.
Figure 12 represents the rope sheave flute surfaces that adopts different abrasive particle projection condition to make is carried out fft analysis and the result that obtains, among the figure, with the rope sheave groove of made as embodiment 3-3 and 3-4.As can be known, than embodiment 3-3, the amplitude of the wavelength of embodiment 3-4 during less than 70 μ m was big after the amplitude of each wavelength component compared.Use these rope sheaves to carry out the result of abrasion test, abrasion loss is basic identical.Amplitude when therefore, wavelength is less than 70 μ m as can be known exerts an influence hardly to abrasion.This is because the amplitude of wavelength during less than 70 μ m is little, so the projection of rope sheave flute surfaces can be cut resin hardly.
Figure 13 represents the rope sheave flute surfaces that adopts different abrasive particle projection condition to make is carried out fft analysis and the result that obtains, with the rope sheave groove of made as embodiment 3-5 and 3-6.As can be known, than embodiment 3-6, the wavelength amplitude the when wavelength of embodiment 3-5 surpasses 140 μ m was big after the amplitude of each wavelength component compared.Use these rope sheaves to carry out the result of abrasion test, abrasion loss is basic identical.Wavelength amplitude when therefore, wavelength is greater than 140 μ m as can be known exerts an influence hardly to abrasion.This be because wavelength when 140 μ m are above, the area of contact of hoist cable and rope sheave increase, the face pressure drop is low, resin is difficult to glue together, the cause that resin is difficult for being cut.
From the amplitude of wavelength component shown in Figure 10 as can be known, in embodiment 3-1 and 3-2,1/140ths μ m of the rate of amplitude wavelength when wavelength is 70～140 μ m～1.0 μ m are little.Rate of amplitude wavelength when the wavelength of the comparative example 3-1 that on the other hand, abrasion loss is bigger is 70 μ m～140 μ m 1/140th big.So, be that the amplitude control of the component of 70 μ m～140 μ m becomes 1/140th little than wavelength by wavelength with the rope sheave flute surfaces, just can reduce the resin-coated abrasion of hoist cable, the life-span of prolongation hoist cable.And even only some also can reduce the abrasion of hoist cable at 1/140th of wavelength when above to the amplitude when wavelength is 70 μ m～140 μ m, but the amplitude when to it is desirable to wavelength be 70 μ m～140 μ m is all in below 1/140th of wavelength.
In Figure 14, adopt FFT that the rope sheave flute surfaces of arithmetic average roughness Ra=3 μ m is analyzed, and obtained the amplitude of each wavelength component, comparative example 4-1 represents its result.Simultaneously, Figure 14 also shows the wavelength of comparative example 3-1 shown in Figure 11 and embodiment 3-1,3-2 and the relation between the amplitude simultaneously.In comparative example 4-1, because arithmetic average roughness Ra is littler than other comparative examples and embodiment, so the amplitude of the component of each wavelength is also less.
Figure 15 represents the result of a measurement of the friction coefficient of the rope sheave of comparative example 3-1, the 4-1 shown in Figure 14, embodiment 3-1,3-2 and hoist cable.In comparative example 3-1 and embodiment 3-1,3-2, the friction coefficient ratio is roughly 1, and in comparative example 4-1, the friction coefficient ratio is 3, and the difference between friction coefficient under the clean state and the friction coefficient when being stained with oil is big.Can know from Figure 14, in comparative example 4-1, wavelength be 70 μ m～140 μ m component the rate of amplitude wavelength 1/1400th promptly 0.05 μ m～0.10 μ m is little.So, when the amplitude of wavelength when being 70 μ m～140 μ m during less than 0.05 μ m～0.10 μ m, the oil that is adhered to can't accumulate and to form oil hollow, thereby causes oil to invade contact surface between hoist cable and the rope sheave, and friction coefficient is reduced.Therefore, be that the amplitude control of the component of 70 μ m～140 μ m becomes greater than 1/1400th of wavelength by wavelength with the rope sheave flute surfaces, the decline of the friction coefficient in the time of just can preventing the foreign matter adhesion.
In above embodiment, the diameter of rope sheave is preferably 200mm, if the rope sheave diameter is more than 200mm, then because the contact surface drops between hoist cable and the rope sheave, so preferred only according to the increase ratio with respect to 200mm of rope sheave diameter, the ratio of the aviation value Zpa of the high peak heights Zp of corresponding increase arithmetic average roughness Ra, rope sheave flute surfaces and the aviation value Zva of low ebb degree of depth Zv is the amplitude of Zva/Zpa and each wavelength component of obtaining by fft analysis.
Figure 16 is by behind the normal direction projection abrasive particle of rope sheave flute surfaces, throws abrasive particle from the tangential direction of rope sheave flute surfaces again, and has implemented the section-drawing of the rope sheave flute surfaces after metal coating 11 processing.Figure 17 is the enlarged drawing of the plated film part of Figure 16.Plated film adopts double-decker, is made of metal coating 11 and the metal coating 12 that contains low friction resin.And the contact surface between the rope sheave becomes the metal coating (nickel plated film) that contains low friction resin.Metal coating is preferably the Ni-P plating that adopts the chemical plating method to form, and low friction resin is preferably tetrafluoroethylene.And the coating film thickness of this moment is preferably 10～25 μ m in two layers aggregate thickness.When thickness during less than 10 μ m, if carry out having defective in the raw MAT'L of plating, then on plated film pore can appear.When thickness surpassed 25 μ m, the peak of rope sheave groove and low ebb can be buried by plated film, like this, when the amount of foreign matter more for a long time, especially be stained with in a large number when oily, the jog on surface is covered by oil, and causes friction coefficient to descend.
The thickness that contains the coating of tetrafluorocthylene resin is preferably 10～15 μ m.When thickness during less than 10 μ m, if carry out having defective in the raw MAT'L of plating, then on plated film pore may appear.When thickness surpasses 15 μ m, in plated film, make tetrafluorocthylene resin evenly disperse the difficulty that becomes.Therefore, the thickness that contains the coating of tetrafluorocthylene resin is preferably 10～15 μ m.
Claims (10)
1. elevator, it is a kind of hoist cable formula elevator, and in this elevator, hoist cable is connected with lift car and is wound on the rope sheave, drives this rope sheave by rotation and drives lift car, and this elevator is characterised in that to have:
The resin-coating hoist cable, this hoist cable is formed by the steel wire twisted, and is coated with resin; And
Described rope sheave, the circumferencial direction of the flute surfaces of this rope sheave and the roughness of surface of Width are arithmetic average roughness Ra=4～10 μ m,
The peak average height of supposing described roughness of surface curve is Zpa, when the aviation value of the low ebb degree of depth of described roughness of surface curve is Zva, satisfies the relation of Zva/Zpa=1.5～2.0.
2. elevator as claimed in claim 1 is characterized in that, the wavelength of described roughness of surface curve is that the amplitude of the component of 70～140 μ m is configured to less than 0.5 μ m～1.0 μ m.
3. elevator as claimed in claim 1 is characterized in that, when the diameter of described rope sheave when 200mm is above, only correspondingly increase the value of Zva/Zpa with respect to the increase ratio of 200mm according to the rope sheave diameter.
4. elevator as claimed in claim 1, it is characterized in that, when the diameter of described rope sheave when 200mm is above, the wavelength of described roughness of surface curve is that the amplitude of the component of 70～140 μ m is configured to, less than only increased on 0.5 μ m～1.0 μ m according to the rope sheave diameter with respect to the increase ratio of 200mm after resulting value.
5. elevator as claimed in claim 1 is characterized in that, it is the metal coating processing of 10～25 μ m that the groove of described rope sheave has been implemented thickness.
6. elevator as claimed in claim 1 is characterized in that, the groove of described rope sheave has implemented to contain the metal coating processing of low friction resin.
7. elevator as claimed in claim 1, it is characterized in that, the groove of described rope sheave is by behind the normal direction of rope sheave flute surfaces projection irregular polygon or ball-shaped powder, processes from tangential direction projection irregular polygon or ball-shaped powder to form again.
8. elevator, it is a kind of hoist cable formula elevator, and in this elevator, the resin-coating hoist cable is connected with lift car and is wound on the rope sheave, drives this rope sheave by rotation and drives lift car, and this elevator is characterised in that,
The groove of described rope sheave is by behind the normal direction of rope sheave flute surfaces projection irregular polygon or ball-shaped powder, processes from tangential direction projection irregular polygon or ball-shaped powder to form again.
9. elevator as claimed in claim 8 is characterized in that, the groove of described rope sheave has implemented to contain the metal coating processing of low friction resin.
10. elevator sheave, this rope sheave is used for hoist cable formula elevator, and in this elevator, the resin-coating hoist cable is connected with lift car and is wound on the rope sheave, drives this rope sheave by rotation and drives lift car, and this elevator sheave is characterised in that,
The groove of described rope sheave is by behind the normal direction projection irregular polygon or ball-shaped powder of rope sheave flute surfaces, process from tangential direction projection irregular polygon or ball-shaped powder again and form, and the metal coating of having implemented to contain low friction resin is handled.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006116285A JP4797769B2 (en) | 2006-04-20 | 2006-04-20 | Elevators and elevator sheaves |
| JP2006116285 | 2006-04-20 | ||
| JP2006-116285 | 2006-04-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101058383A true CN101058383A (en) | 2007-10-24 |
| CN101058383B CN101058383B (en) | 2010-11-03 |
Family
ID=38229561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100961973A Active CN101058383B (en) | 2006-04-20 | 2007-04-18 | Elevator and elevator sheave |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1847503A1 (en) |
| JP (1) | JP4797769B2 (en) |
| CN (1) | CN101058383B (en) |
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| CN101481065B (en) * | 2008-01-09 | 2010-12-08 | 株式会社日立制作所 | Sheave for elevator |
| CN103453114A (en) * | 2012-05-28 | 2013-12-18 | 加特可株式会社 | Pulley for chain type stepless transmission |
| CN107781387A (en) * | 2016-08-30 | 2018-03-09 | 奥的斯电梯公司 | Belt pulley and method for stamping |
| CN109186526A (en) * | 2018-08-28 | 2019-01-11 | 山东建筑大学 | A kind of surface roughness characterizing method |
| CN112960521A (en) * | 2021-03-25 | 2021-06-15 | 日立电梯（中国）有限公司 | Elevator coating belt traction wheel and manufacturing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| ES2374655T3 (en) * | 2007-06-20 | 2012-02-20 | Inventio Ag | SUSPENSION MEANS FOR AN ELEVATOR AND ELEVATOR ELEMENT TO OPERATE OR DEVICE SAID MEANS OF SUSPENSION IN AN ELEVATOR INSTALLATION. |
| JP5281883B2 (en) * | 2008-03-07 | 2013-09-04 | 株式会社日立製作所 | Elevator rope and elevator belt |
| EP2324138B1 (en) * | 2008-07-03 | 2018-12-26 | Otis Elevator Company | Wear and corrosion resistant coating having a roughened surface |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01150070A (en) * | 1987-12-04 | 1989-06-13 | Mitsubishi Electric Corp | Pulley and its manufacture |
| JPH0510405A (en) * | 1991-06-28 | 1993-01-19 | Toyota Motor Corp | Belt type transmission gear |
| US6419208B1 (en) * | 1999-04-01 | 2002-07-16 | Otis Elevator Company | Elevator sheave for use with flat ropes |
| SG83818A1 (en) * | 1999-10-21 | 2001-10-16 | Inventio Ag | Rope deflection and suitable synthetic fiber rope and their use |
| US6371448B1 (en) * | 1999-10-29 | 2002-04-16 | Inventio Ag | Rope drive element for driving synthetic fiber ropes |
| FI117434B (en) * | 2000-12-08 | 2006-10-13 | Kone Corp | Elevator and elevator drive wheel |
| JP4617625B2 (en) * | 2001-08-31 | 2011-01-26 | 宇部興産株式会社 | Winding core |
| JP4134604B2 (en) * | 2002-06-13 | 2008-08-20 | 株式会社村田製作所 | Method for manufacturing ceramic electronic component and ceramic electronic component |
| EP1516845B1 (en) * | 2002-06-27 | 2010-01-20 | Mitsubishi Denki Kabushiki Kaisha | Rope for elevator and method of manufacturing the rope |
| JP2004132457A (en) * | 2002-10-10 | 2004-04-30 | Toyota Motor Corp | Sliding member |
| JP4323357B2 (en) * | 2004-03-26 | 2009-09-02 | ジヤトコ株式会社 | Pulley manufacturing method |
| JP4210661B2 (en) * | 2004-03-26 | 2009-01-21 | ジヤトコ株式会社 | Belt type continuously variable transmission |
| JP4523364B2 (en) * | 2004-08-31 | 2010-08-11 | 株式会社日立製作所 | elevator |
-
2006
- 2006-04-20 JP JP2006116285A patent/JP4797769B2/en active Active
-
2007
- 2007-04-18 CN CN2007100961973A patent/CN101058383B/en active Active
- 2007-04-20 EP EP07008115A patent/EP1847503A1/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101481065B (en) * | 2008-01-09 | 2010-12-08 | 株式会社日立制作所 | Sheave for elevator |
| CN103453114A (en) * | 2012-05-28 | 2013-12-18 | 加特可株式会社 | Pulley for chain type stepless transmission |
| CN103453114B (en) * | 2012-05-28 | 2016-08-17 | 加特可株式会社 | Chain-type continuously variable transmission pulley |
| CN107781387A (en) * | 2016-08-30 | 2018-03-09 | 奥的斯电梯公司 | Belt pulley and method for stamping |
| CN107781387B (en) * | 2016-08-30 | 2022-08-05 | 奥的斯电梯公司 | Pulley and embossing method |
| CN109186526A (en) * | 2018-08-28 | 2019-01-11 | 山东建筑大学 | A kind of surface roughness characterizing method |
| CN112960521A (en) * | 2021-03-25 | 2021-06-15 | 日立电梯（中国）有限公司 | Elevator coating belt traction wheel and manufacturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2007284237A (en) | 2007-11-01 |
| JP4797769B2 (en) | 2011-10-19 |
| CN101058383B (en) | 2010-11-03 |
| EP1847503A1 (en) | 2007-10-24 |
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